Links here and here
We just covered economic discrimination on Friday in my principles of microeconomics course. One take home message is that if a firm's only goal is to maximize profits, they won't discriminate (except for a couple unusual scenarios). The students also then realize that discrimination is much more likely to occur by governments or academia, where there isn't the same motive to maximize profits.
This quote from marginal revolution ...
"Interestingly, the Obama administration has recently reversed Bush era rules and interpretations in order to promote race-based admissions" (i.e., race-based discrimination)
makes me realize we're a long way from MLK's dream of people being viewed by the content of their character, instead of the color of their skin.